Mechanism study on co-processing of water-based drilling cuttings and phosphogypsum in non-autoclaved aerated concrete

被引：15

作者：

Wang, Chao-qiang ^{[1
,2
,3
]}

Mei, Xu-dong ^{[1
,2
]}

Zhang, Chun ^{[1
,2
]}

Liu, Dong-sheng ^{[4
]}

Xu, Feng-lin ^{[1
,2
]}

机构：

[1] Shale Gas Technol & Dev, Chongqing Environm Protect Ctr, Chongqing 400800, Peoples R China

[2] Chongqing Environm Protect Engn Technol Ctr Shale, Chongqing 408000, Peoples R China

[3] Chongqing River State Bldg Mat Co Ltd, Chongqing 408121, Peoples R China

[4] Yangtze Normal Univ, Coll Green Intelligent Environm, Chongqing 408100, Peoples R China

来源：

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2020年 / 27卷 / 18期

关键词：

Non-autoclaved aerated concrete; Shale gas; Drilling cuttings; Utilization; NON-FIRED BRICKS; CEMENT; GYPSUM;

D O I：

10.1007/s11356-020-09029-z

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The feasibility of coordinated use of water-based drilling cuttings (WDC), fly ash, and phosphogypsum (PG) as raw materials for the preparation of WDC non-autoclaved aerated concrete (WNAAC) was evaluated by laboratory experiment. The results showed that the pozzolanic reaction of the multi-component cementitious system containing 40% (in mass) of WDC is significantly promoted. Newly formed C-S-H gel and ettringite with the uniform distribution of fibrous and flake-like shape occur, presenting a denser and interlock microstructure. In addition, after cured by steam at 80 degrees C for 24 h, the mechanical property and unit weight of the WNAAC prepared with 40% WDC fully meet the B06, A3.5 grade of China state standard (GB/T11968-2006). Environmental performance tests confirm that the WNAAC prepared with 40% WDC does not create any secondary contamination.

引用

页码：23364 / 23368

页数：5

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